package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;
    @Autowired
    SpuImagesService spuImagesService;
    @Autowired
    AttrService attrService;
    @Autowired
    ProductAttrValueService attrValueService;
    @Autowired
    SkuInfoService skuInfoService;
    @Autowired
    SkuImagesService skuImagesService;
    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    BrandService brandService;
    @Autowired
    CategoryService categoryService;
    @Autowired
    CouponFeignService couponFeignService;
    @Autowired
    WareFeignService wareFeignService;
    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );
        return new PageUtils(page);
    }

    //TODO 高级部分完善
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1. 保存spu基本信息  pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);
        //2. 保存spu的描述图片  pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);
        //3。保存spu的图片集   pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(infoEntity.getId(),images);
        //4. 保存spu的规格参数   pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr->{
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity id= attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);
        //5. 保存spu的积分信息：gulimall_sms->sms_spu_bounds
         Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r =couponFeignService.saveSpuBouds(spuBoundTo);
        if(r.getCode() != 0){
            log.error("远程保存spu积分信息失败");
        }

        //5. 保存当前spu对应的所有sku信息；
        List<Skus> skus = vo.getSkus();
        if(skus!=null&&skus.size()>0){
            skus.forEach(item->{
                String defaultImg = "";
                for (Images image : item.getImages()){
                    if(image.getDefaultImg() == 1){
                        defaultImg = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //5.1),sku的基本信息： pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img->{
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    //返回true就是需要，返回false就是剔除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //5.2),sku的图片信息：pms_sku_images
                skuImagesService.saveBatch(imagesEntities);
                //TODO 没有图片；路径的无需保存
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a->{
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a,attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                //5.3),sku的销售属性信息：pms_sku_sale_attr_value
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);
                //5.4),sku的优惠，满减的信息：gulimall_sms->sms_sku_ladder\sms-sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                skuReductionTo.setSkuId(skuId);
                BeanUtils.copyProperties(item,skuReductionTo);
                if(skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if(r1.getCode() != 0){
                        log.error("远程保存spu优惠信息失败");
                    }
                }
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<SpuInfoEntity>();
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("id",key).or().like("spu_name",key);
                //status = 1 and (id=1 or spu_name like xxx)
            });
        }
        String status = (String) params.get("status");
        if(!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&& !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&& !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        //1.查出当前spuId对应的所有sku信息，品牌名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getBrandId).collect(Collectors.toList());
        //TODO 4.查出当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrListforSpu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr->{
            return attr.getAttrId();
        }).collect(Collectors.toList());
        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item->{
           return idSet.contains(item.getAttrId());
        }).map(item->{
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item,attrs1);
            return attrs1;
        }).collect(Collectors.toList());

        //TODO 1,发生远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try{
            R r = wareFeignService.getSkusHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>(){
            };
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item->item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常:原因{}",e);
        }
        //2.封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku->{
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku,esModel);
            //skuPrice,skuImg,hasStock,hotScore
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            //hasStock,hasScore
            //设置库存信息
            if(finalStockMap == null){
                esModel.setHasStock(true);
            }else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            //TODO 2.热度评分
            esModel.setHotScore(0l);

            //TODO 3.查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());

            //设置检索属性
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        //TODO 5，将数据发送给es进行保存 gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if(r.getCode() == 0){
            //远程调用成功
            //TODO 6，修改当前spu状态
            this.baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else{
            //远程调用失败
            //TODO 7,重复调用？接口幂等性？重试机制？
            //Feign的调用流程
            /*
            * 1，构造请求数据，将对象转为json
            * 2.发送请求进行执行（执行成功会解码响应数据）
            * 3.执行请求会有重试机制
            */
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spuInfoEntity = getById(spuId);
        return spuInfoEntity;
    }

}